Mine does exactly the same, but mostly on crappy roads and especially when there are passengers in the back!! I thought it was the spare wheel so took it out but never stopped it, should you manage to work out what the problem is could you let me know:)

Mine does exactly the same, but mostly on crappy roads and especially when there are passengers in the back!! I thought it was the spare wheel so took it out but never stopped it, should you manage to work out what the problem is could you let me know:)

Sorted it out, It a little bit of the shoe adjusters had broken off and was spinning inside the drum.